#!/bin/bash

# 轻远电力ERP部署脚本
# 使用方法: ./deploy.sh

set -e

echo "🚀 开始部署轻远电力ERP系统..."

# 配置
APP_DIR="/opt/company-finance-system"
BACKUP_DIR="/opt/backups"
LOG_DIR="/var/log/company-finance"

# 创建目录
echo "📁 创建目录..."
sudo mkdir -p $APP_DIR
sudo mkdir -p $BACKUP_DIR
sudo mkdir -p $LOG_DIR
sudo chown -R ubuntu:ubuntu $APP_DIR
sudo chown -R ubuntu:ubuntu $BACKUP_DIR

# 进入应用目录
cd $APP_DIR

# 备份现有数据（如果存在）
if [ -d "$APP_DIR/backend" ]; then
    echo "💾 备份现有数据..."
    BACKUP_NAME="backup_$(date +%Y%m%d_%H%M%S)"
    cp -r $APP_DIR/backend/database.sqlite $BACKUP_DIR/$BACKUP_NAME.sqlite 2>/dev/null || true
    echo "✅ 数据已备份到 $BACKUP_DIR/$BACKUP_NAME.sqlite"
fi

# 克隆或更新代码
echo "📥 下载最新代码..."
if [ -d "$APP_DIR/.git" ]; then
    git pull origin main
else
    git clone https://github.com/a273825743/company-finance-system.git .
fi

# 安装后端依赖
echo "📦 安装后端依赖..."
cd $APP_DIR/backend
npm install

# 安装前端依赖并构建
echo "📦 安装前端依赖并构建..."
cd $APP_DIR/frontend
npm install
npm run build

# 创建PM2配置文件
echo "⚙️ 配置PM2..."
cat > $APP_DIR/ecosystem.config.js << 'EOF'
module.exports = {
  apps: [
    {
      name: 'company-finance-backend',
      script: './backend/final-backend.js',
      cwd: '/opt/company-finance-system',
      instances: 1,
      autorestart: true,
      watch: false,
      max_memory_restart: '1G',
      env: {
        NODE_ENV: 'production',
        PORT: 3001
      },
      error_file: '/var/log/company-finance/err.log',
      out_file: '/var/log/company-finance/out.log',
      log_date_format: 'YYYY-MM-DD HH:mm:ss Z'
    }
  ]
};
EOF

# 使用PM2启动/重启服务
echo "🚀 启动后端服务..."
cd $APP_DIR
pm2 startOrRestart ecosystem.config.js

# 配置Nginx
echo "🌐 配置Nginx..."
sudo tee /etc/nginx/sites-available/company-finance << 'EOF'
server {
    listen 80;
    server_name 43.161.248.209;
    
    # 前端静态文件
    location / {
        root /opt/company-finance-system/frontend/dist;
        index index.html;
        try_files $uri $uri/ /index.html;
        
        # PWA支持
        location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
            expires 1y;
            add_header Cache-Control "public, immutable";
        }
    }
    
    # 后端API代理
    location /api/ {
        proxy_pass http://localhost:3001;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_cache_bypass $http_upgrade;
    }
    
    # 上传文件访问
    location /uploads/ {
        alias /opt/company-finance-system/backend/uploads/;
        expires 1y;
        add_header Cache-Control "public";
    }
}
EOF

# 启用Nginx配置
sudo ln -sf /etc/nginx/sites-available/company-finance /etc/nginx/sites-enabled/
sudo rm -f /etc/nginx/sites-enabled/default
sudo nginx -t
sudo systemctl restart nginx

# 保存PM2配置
echo "💾 保存PM2配置..."
pm2 save
pm2 startup systemd -u ubuntu --hp /home/ubuntu

echo ""
echo "✅ 部署完成！"
echo ""
echo "📱 访问地址: http://43.161.248.209"
echo "🔧 后端API: http://43.161.248.209/api"
echo "📊 PM2管理: pm2 status"
echo "📝 日志查看: pm2 logs"
echo ""